/* Polaris Network — single stylesheet. No external resources are requested. */

:root {
  --ink: #15302a;
  --ink-soft: #3f584f;
  --paper: #fbf8f3;
  --panel-tint: #f1ebe0;
  --panel-deep: #e8e0d1;
  --line: #d6c9b4;
  --line-soft: #e4dac8;
  --accent: #91400f;
  --accent-deep: #6f2f09;
  --radius: 3px;
  --measure: 40rem;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", Times, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.68;
  overflow-wrap: break-word;
}

/* ---------- skip link ---------- */

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 1.1rem;
  z-index: 50;
}
.skip:focus { left: 0; }

/* ---------- shell ---------- */

.shell {
  width: 100%;
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.prose { max-width: var(--measure); }

/* ---------- header ---------- */

.masthead {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.masthead-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
}

.brand svg { flex: none; }

.brand-name {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-line {
  display: block;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.nav-toggle {
  display: none;
  font: inherit;
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--panel-tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem 0.8rem;
  cursor: pointer;
}

.nav {
  border-top: 1px solid var(--line-soft);
  padding: 0.35rem 0 0.6rem;
}

.nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1.25rem;
}

.nav a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.945rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.nav a:hover { color: var(--accent-deep); border-bottom-color: var(--line); }

.nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

/* ---------- typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--serif);
  line-height: 1.22;
  color: var(--ink);
  margin: 0 0 0.6rem;
  font-weight: 700;
}

h1 { font-size: 2.05rem; letter-spacing: -0.01em; }
h2 { font-size: 1.5rem; margin-top: 2.6rem; }
h3 { font-size: 1.16rem; margin-top: 1.8rem; }
h4 { font-size: 1.02rem; margin-top: 1.3rem; }

p { margin: 0 0 1.05rem; }

a { color: var(--accent-deep); }
a:hover { color: var(--accent); }

main ul, main ol { margin: 0 0 1.15rem; padding-left: 1.25rem; }
main li { margin-bottom: 0.5rem; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- layout blocks ---------- */

main { display: block; }

.band { padding: 2.6rem 0; }
.band-tint { background: var(--panel-tint); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.band-lead { padding: 2.9rem 0 2.2rem; }

.page-head { padding: 2.6rem 0 1.4rem; border-bottom: 1px solid var(--line-soft); }
.page-head p.standfirst {
  font-size: 1.16rem;
  color: var(--ink-soft);
  margin-bottom: 0;
}

.body-copy { padding: 2rem 0 2.8rem; }

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 0.7rem;
  font-weight: 600;
}

.lede { font-size: 1.2rem; color: var(--ink-soft); }

/* ---------- panels ---------- */

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 1.3rem 1.4rem;
  margin: 1.8rem 0;
}

.panel > :last-child { margin-bottom: 0; }
.panel h2, .panel h3 { margin-top: 0; }

.panel-note { background: var(--panel-tint); border-left: 4px solid var(--accent); }
.panel-watch { background: #fff; border-left: 4px solid var(--ink); }
.panel-method { background: var(--panel-deep); border: 1px solid var(--line); }

.disclosure {
  border: 1px solid var(--accent);
  border-left-width: 5px;
  border-radius: var(--radius);
  background: #fff;
  padding: 1.25rem 1.4rem;
  margin: 1.8rem 0;
}
.disclosure > :last-child { margin-bottom: 0; }
.disclosure h2 { margin-top: 0; font-size: 1.12rem; }

.inline-disclosure {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0.55rem 0 0;
  max-width: var(--measure);
}

/* ---------- call to action link ---------- */

.visit {
  display: inline-block;
  font-weight: 600;
  font-size: 1rem;
  color: #fff;
  background: var(--accent-deep);
  border: 1px solid var(--accent-deep);
  border-radius: var(--radius);
  padding: 0.7rem 1.15rem;
  text-decoration: none;
}
.visit:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.visit:focus-visible { outline-offset: 3px; }

/* ---------- tables ---------- */

.table-wrap {
  overflow-x: auto;
  margin: 1.6rem 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 34rem;
  font-size: 0.97rem;
  background: #fff;
}

caption {
  caption-side: top;
  text-align: left;
  font-size: 0.9rem;
  color: var(--ink-soft);
  padding: 0.75rem 0.9rem;
  background: var(--panel-tint);
  border-bottom: 1px solid var(--line);
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--line-soft);
}

thead th {
  background: var(--panel-deep);
  font-family: var(--sans);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
}

tbody tr:last-child td, tbody tr:last-child th { border-bottom: 0; }
tbody th { font-weight: 600; }

/* ---------- definition list ---------- */

dl.terms { margin: 1.5rem 0; }
dl.terms dt {
  font-weight: 700;
  font-family: var(--serif);
  font-size: 1.05rem;
  margin-top: 1.1rem;
}
dl.terms dd { margin: 0.3rem 0 0; color: var(--ink-soft); }

/* ---------- checklist ---------- */

ul.checklist { list-style: none; padding-left: 0; }
ul.checklist li {
  position: relative;
  padding-left: 1.7rem;
  margin-bottom: 0.7rem;
}
ul.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.7rem;
  height: 0.7rem;
  border: 2px solid var(--accent);
  border-radius: 2px;
}

/* ---------- steps ---------- */

ol.steps { list-style: none; counter-reset: step; padding-left: 0; }
ol.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 2.6rem;
  margin-bottom: 1.3rem;
}
ol.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.85rem;
  height: 1.85rem;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--serif);
  font-size: 0.95rem;
  border-radius: 50%;
}
ol.steps > li h3 { margin-top: 0; }

/* ---------- cards ---------- */

.cards {
  list-style: none;
  padding: 0;
  margin: 1.6rem 0 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.cards li {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 1.1rem 1.2rem;
  margin: 0;
}

.cards h3 { margin: 0 0 0.35rem; font-size: 1.08rem; }
.cards p { margin: 0; font-size: 0.97rem; color: var(--ink-soft); }
.cards a { text-decoration: none; }
.cards a:hover { text-decoration: underline; }

/* ---------- contents ---------- */

.contents {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-tint);
  padding: 1.1rem 1.3rem;
  margin: 1.8rem 0 2.2rem;
  max-width: var(--measure);
}
.contents h2 { margin: 0 0 0.5rem; font-size: 1rem; font-family: var(--sans); letter-spacing: 0.06em; text-transform: uppercase; }
.contents ol { margin: 0; padding-left: 1.2rem; }
.contents li { margin-bottom: 0.3rem; }

/* ---------- questions (native disclosure) ---------- */

.qa {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: 0.6rem;
}
.qa summary {
  cursor: pointer;
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  font-family: var(--serif);
  font-size: 1.05rem;
  list-style-position: inside;
}
.qa summary:hover { color: var(--accent-deep); }
.qa[open] summary { border-bottom: 1px solid var(--line-soft); }
.qa .qa-body { padding: 1rem 1.1rem 0.3rem; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 3px solid var(--ink);
  background: var(--panel-tint);
  padding: 2.4rem 0 3rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.publisher {
  max-width: 44rem;
}

.publisher .pub-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 0.35rem;
}

.publisher p { margin: 0 0 0.3rem; }
.publisher .pub-spacer { margin-bottom: 1rem; }

.footer-links { margin: 1rem 0; }
.footer-links a { margin-right: 0.15rem; }

.trademark {
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  margin-top: 1rem;
  max-width: 48rem;
}

.reviewed { color: var(--ink-soft); margin-top: 0.8rem; }

/* ---------- decorative mark ---------- */

.mark-rule {
  display: block;
  width: 100%;
  max-width: 9rem;
  height: 10px;
  margin: 0 0 1.2rem;
}

/* ---------- small screens ---------- */

@media (max-width: 43rem) {
  body { font-size: 1.02rem; }
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.32rem; }
  .nav-toggle { display: inline-block; }
  .nav[hidden] { display: none; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav li { border-bottom: 1px solid var(--line-soft); }
  .nav a { padding: 0.65rem 0; }
  .band, .band-lead, .page-head { padding-top: 1.9rem; padding-bottom: 1.9rem; }
}

@media (min-width: 43.0625rem) {
  .nav[hidden] { display: block; }
}